102157673720405 has 16 divisors (see below), whose sum is σ = 129077047735680. Its totient is φ = 77403297840192.

The previous prime is 102157673720381. The next prime is 102157673720413. The reversal of 102157673720405 is 504027376751201.

It is a cyclic number.

It is not a de Polignac number, because 102157673720405 - 2²⁰ = 102157672671829 is a prime.

It is a super-2 number, since 2×102157673720405² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148720814 + ... + 149406143.

It is an arithmetic number, because the mean of its divisors is an integer number (8067315483480).

Almost surely, 2^{102157673720405} is an apocalyptic number.

It is an amenable number.

102157673720405 is a deficient number, since it is larger than the sum of its proper divisors (26919374015275).

102157673720405 is a wasteful number, since it uses less digits than its factorization.

102157673720405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298130588.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 102157673720405 in words is "one hundred two trillion, one hundred fifty-seven billion, six hundred seventy-three million, seven hundred twenty thousand, four hundred five".